I've been looking at gunsmithing screwdrivers for a while and always lamented that they were awfully expensive. I was at Harbor Freight the other day looking for a cutting board and ran into this set... http://www.harborfreight.com/26-piec...set-96733.html They're hollow ground screwdrivers...I ended up having to grind the thickness a bit with a dremel in order to get them into the replica's screws, but this set has all the sizes needed to get our guns apart and back together....just passing along the idea.